Military conflicts similar to or like Battle of Antietam

Fought on July 1, 1862, between the Confederate Army of Northern Virginia, led by Gen. Robert E. Lee, and the Union Army of the Potomac under Maj. Gen. George B. McClellan. The final battle of the Seven Days Battles during the American Civil War, taking place on a 130 ft elevation of land known as Malvern Hill, near the Confederate capital of Richmond, Virginia and just one mile from the James River. Wikipedia

The Maryland campaign—or Antietam campaign—occurred September 4–20, 1862, during the American Civil War. Repulsed by the Army of the Potomac under Maj. Gen. George B. McClellan, who moved to intercept Lee and his Army of Northern Virginia and eventually attacked it near Sharpsburg, Maryland. Wikipedia

Series of American Civil War battles fought March 29 – April 9, 1865, in Virginia that concluded with the surrender of Confederate General Robert E. Lee's Army of Northern Virginia to forces of the Union Army under the overall command of Lieutenant General Ulysses S. Grant, marking the effective end of the war. Outnumbered and exhausted from a winter of trench warfare over an approximately 40 mi front, numerous battles, disease, hunger and desertion. Wikipedia

The first battle of Lt. Gen. Ulysses S. Grant's and General George G. Meade's 1864 Virginia Overland Campaign against Gen. Robert E. Lee and the Confederate Army of Northern Virginia in the American Civil War. Both armies suffered heavy casualties, around 5,000 men killed in total, a harbinger of a bloody war of attrition by Grant against Lee's army and, eventually, the Confederate capital, Richmond, Virginia. Wikipedia

Fought May 23–26, 1864, as part of Union Lt. Gen. Ulysses S. Grant's Overland Campaign against Confederate Gen. Robert E. Lee's Army of Northern Virginia. It consisted of a series of small actions near the North Anna River in central Virginia, rather than a general engagement between the armies. Wikipedia

Civil war in the United States from 1861 to 1865, fought between northern states loyal to the Union and southern states that had seceded to form the Confederate States of America. The civil war began as a result of the unresolved controversy of the enslavement of black people in the southern states. Wikipedia